The Ar38 was designed
to match the Ti48 Transport. Using the custom I2S digital connection,
the pair functions as a high-end CD player but with the added benefits
that the separation of the transport and DAC sections convey.
As a standalone product however, the Ar38 is itself a high quality
audiophile DAC with upsampling capabilities to 24 bits/96khz.
In designing the Ar38, our aim was to create the most natural
sounding digital audio component possible with today's technology.
Therefore, the Ar38 only uses a passive second-order filter and
discrete Class A analogue stages.
Upsampling CD data results in higher bandwidth of the converted
data. This allows the use of a gentle second order filter, following
the digital section, to remove most of the ultra-sonic hash (a
normal result of the digital-to-analogue conversion) from the analogue
output. The use of such a low order filter reduces phase changes
and filter-related ringing of the signal.
The entire analogue stage, including the output section, is implemented
with a single-ended, Class A, discrete circuit operated without
feedback loops. The whole design is DC-coupled, a feature very
seldom found in single-ended designs.

When connected to the Ti48 transport, using our custom I2S link,
the data can be upsampled in the Ti48 to 24 bits/192khz and then
transmitted directly to the Ar38's DAC chips, thereby ensuring
that interface jitter is negligible.
Other digital sources connected to the Ar38 using the S/PDIF (coaxial)
link will be upsampled to 24 bits/96khz.

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